<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>二月</title>
  <style>
    ul {
      list-style: none;
    }
    #con-bottom-img {
      width: 80%;
      margin: 0 auto;
      /* text-align: center; */
      /* border: 1px solid #ccc; */
      overflow:auto;
      display: flex;
      flex-direction: column;
      justify-content: center;

    }

    .con-bottom-imgul {
      width: 80%;
      float: left;
      margin: 0 auto;
    }

    .con-bottom-imgul li {
      float: left;
      width: 22%;
      text-align: center;
      margin-top: 10px;
      margin-left: 5px;
    }

    .con-bottom-imgul li img {
      display: block;
      width: 100%;
      height: 100%;
    }
  </style>
</head>

<body>
  <div id="con-bottom-img">
    <ul class="con-bottom-imgul">
      <li><img src="images/aim-img/two1.png" alt=""></li>
      <li><img src="images/aim-img/two1.png" alt=""></li>
      <li><img src="images/aim-img/two1.png" alt=""></li>
      <li><img src="images/aim-img/two1.png" alt=""></li>
    </ul>
    <ul class="con-bottom-imgul">
      <li><img src="images/aim-img/two4.png" alt=""></li>
      <li><img src="images/aim-img/two4.png" alt=""></li>
      <li><img src="images/aim-img/two4.png" alt=""></li>
      <li><img src="images/aim-img/two4.png" alt=""></li>
    </ul>

  </div>


</body>

</html>